Glass powder and chemical polymerization initiator
US-12460021-B2 · Nov 4, 2025 · US
of antimony, bismuth, vanadium, niobium or tantalum
of antimony, bismuth, vanadium, niobium or tantalum · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08F4/20 |
| Official title | of antimony, bismuth, vanadium, niobium or tantalum |
| Display label | of antimony, bismuth, vanadium, niobium or tantalum |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of preparing epdm copolymer
US-2025154294-A1 · May 15, 2025 · US
Glass powder and chemical polymerization initiator
US-2022332857-A1 · Oct 20, 2022 · US
Components and catalysts for the polymerization of olefins
US-11466107-B2 · Oct 11, 2022 · US
Phosphinic vanadium complex, catalytic system comprising said phosphinic vanadium complex and process for the (co) polymerization of conjugated dienes
US-2022177500-A1 · Jun 9, 2022 · US
Crosslinking agents for polymeric systems
US-2022162401-A1 · May 26, 2022 · US
Curable composition
US-11306160-B2 · Apr 19, 2022 · US
Initiator system for cationic polymerization of olefins
US-11168100-B2 · Nov 9, 2021 · US
Components and catalysts for the polymerization of olefins
US-2021269564-A1 · Sep 2, 2021 · US
Initiator system for cationic polymerization of olefins
US-2021171550-A1 · Jun 10, 2021 · US
High molecular weight multimodal elastomer compositions with good processability
US-10815326-B2 · Oct 27, 2020 · US
High molecular weight multimodal elastomer compositions with good processability
US-10815325-B2 · Oct 27, 2020 · US
Curable composition
US-2020291157-A1 · Sep 17, 2020 · US
Film comprising propylene-ethylene-1-butene terpolymers
US-10576720-B2 · Mar 3, 2020 · US
Catalyst for the polymerization of olefins
US-10562990-B2 · Feb 18, 2020 · US
Aldimines and ketimines as initiators in hardener systems and corresponding resin compositions inter alia for fixing technology
US-10544235-B2 · Jan 28, 2020 · US
Initiator system for cationic polymerization of olefins
US-2020010644-A1 · Jan 9, 2020 · US
Bulkpolymerisation process for the preparation of polydienes
US-2019202944-A1 · Jul 4, 2019 · US
Phosphinic vanadium complex, catalytic system comprising said phosphinic vanadium complex and process for the (co) polymerization of conjugated dienes
US-2019194233-A1 · Jun 27, 2019 · US
Catalyst for the polymerization of olefins
US-2019055330-A1 · Feb 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/20?
- CPC C08F4/20 is the Cooperative Patent Classification code for “of antimony, bismuth, vanadium, niobium or tantalum.”
- How many patents are filed under CPC C08F4/20 (of antimony, bismuth, vanadium, niobium or tantalum)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/20 growing?
- Publication counts under this code: 5 in 2022 vs 2 in 2025 (latest complete years).